F Grade Healer Becomes Strongest Biomancer

Kaito

Togashi checked corners with his body.

Kaito had seen agents do this before. Most of them were dead. The ones who were not kept three paces between themselves and the nearest wall, enough room to pivot without getting pinned. It was not instinct. It was practice. The kind that came from watching someone else get pinned first.

B-grade, Squad Two. Jaw scar. Silent since the path split.

Good. Talkers died first in corridors.

Kaito matched the spacing. His sword shifted with each step and he adjusted the sheath angle without breaking stride. The weight was familiar. The cost of drawing it was not something he allowed himself to consider in tight quarters.

Kise followed behind them. Gauze wrapped her right hand, pressed to her stomach. Her left held two charges, thumb resting on the primer. She did not need Togashi's signals to find the gap in their formation. She stepped into it without hesitation.

Two charges. That was everything.

Path B felt wrong from the first glance. The platform from Kokubunji's Chūō Line ran straight for thirty meters, then tilted upward at a forty-five degree angle and kept climbing. Ticket gates hung sideways from the wall. A vending machine stood in the center of the track, glass facing the ceiling, still lit.

Togashi raised a fist.

The air was moving. Warm, rhythmic pulses brushed against Kaito's face. The breath came from above.

He looked up.

Three meters of segmented body lay pressed against the concrete ceiling. Bone-white carapace ridged along its length, tapering into a thick tail. Dozens of swimmerets along its underside fanned the air in synchronized waves. Two raptorial limbs were folded against its thorax, each club wider than Kaito's chest.

Its eyes sat on stalks. They moved independently. One fixed on Togashi. The other settled on him.

[Pale Hammershell — B-grade]

[HP: 15,000/15,000]

The swimmerets flared and the creature slid sideways across the ceiling, carving a shallow groove in the concrete as it circled above them.

Togashi dropped his hand and held up three fingers.

Spread them apart.

Kise placed the first charge against the wall with her left hand, proximity set. She moved four meters and set the second.

Half their firepower for a single engagement. Togashi did not hesitate. Men who survived B-grade corridors understood cost.

He stepped between the charges and waited.

The creature dove.

The first explosion caught it mid-descent, cracking loose two plates of armor and slamming it into the wall. Its tail swept into the radius of the second charge. The blast flipped it onto its back. Its swimmerets churned against open air.

Kaito closed in. He drove the sheathed blade into the gap the charges had opened, forcing the reinforced tip through two inches of layered armor until the impact shuddered up his arms. The point punched through weakened plate and into the softer structure beneath.

One limb unfolded and struck the floor where he had been a fraction of a second earlier. Concrete cratered. The shockwave rang in his ears.

He should have been faster.

Togashi moved in from the flank and widened the breach with his own weapon. The creature rolled upright and launched back to the ceiling, trailing black fluid.

[Pale Hammershell: 9,847/15,000]

They had carved away nearly a third of its health in seconds. With careful positioning and disciplined timing, they could finish it. Togashi directing, Kise repositioning, Kaito opening the armor each time it descended.

A clean fight.

The kind that ended with survivors.

The plates along its spine split. Bone-white armor dropped away and shattered against the tile. Beneath it, the chitin was translucent gray. Musculature flexed visibly with each pulse of its swimmerets. The raptorial limbs extended farther without the bulk of plating. The clubs gleamed wet.

[Dull Hammertide]

[HP: 22,000/22,000]

The number reset. Twenty-two thousand.

Of course it did.

It struck Togashi before Kaito fully tracked the motion. A club caught him in the ribs and hurled him sideways into the wall. Tile cracked behind his shoulders. Togashi tore the cork from his first potion with his teeth and drank while standing.

He remained upright.

The Hammertide rebounded off the wall, ran across the ceiling, and came down toward Kise. She rolled clear. The club smashed the floor where she had been kneeling over a charge. The detonation followed, but the angle was wrong.

The blast achieved little. Now it moved in three dimensions, banking from wall to ceiling to floor without pause. Hand signals meant nothing when you could not spare the glance to read them.

"Bottleneck," Togashi said. His voice was steady. "Pinch point. Kise. Last charge."

Kaito had one sheath strike left before he would have to consider the sword.

He drank his first potion while retreating. Warmth spread through his bruised shoulder, chasing away the numbness from a glancing tail strike. He needed his sword arm. The health itself was secondary.

[HP: 6,240/8,240 → 7,890/8,240]

Kise set the final charge where the corridor narrowed and the ceiling dipped to two meters. She armed it with her left hand, watching the creature circle above.

Togashi positioned himself at the choke point and drew it in.

It came fast, both clubs raised.

The charge detonated at point-blank range.

The blast hurled the Hammertide backward. Three swimmerets tore free from its left side. It hit the floor hard, skidding across tile in a smear of black fluid.

Kaito was already moving. He stepped inside the reach of the clubs and hammered the reinforced tip of the sheath into the thinned chitin at the thorax. Once. Twice. A third driving thrust that bit deeper before the creature twisted and surged back up the wall.

[Dull Hammertide: 14,106/22,000] 𝑓𝘳𝑒𝑒𝓌𝘦𝘣𝘯ℴ𝑣𝘦𝑙.𝘤𝑜𝑚

Kise held up her hands.

The Hammertide circled overhead. One eye stalk tracked the angle of Kaito's sheath. The other fixed on Togashi who leaned against the wall with two empty potion vials at his feet and the third still hanging from his belt.

Three potions. Most agents never used all three.

This corridor required more.

The creature dove for Togashi, both clubs descending with full weight.

Togashi drank his third potion. The warmth had not reached his legs before the first club struck his chest and drove him through the wall. Concrete shattered and he vanished into the service corridor beyond, a tangle of pipes and darkness. The Hammertide followed through the opening.

Then there was silence.

When it emerged, its clubs were red. One eye stalk hung cracked and leaking clear fluid.

Kaito stepped to the hole.

Togashi lay against the pipes. The wall behind him bore five deep craters. He still held the empty vial. He looked at it as if expecting something more from it.

Then he looked at Kaito. Then at Kise.

"The sword."

"It costs three years."

"I know."

Seven years remaining. If he drew, four would remain.

Four years for a man he had known ninety minutes.

Togashi's gaze lingered on Kise until it stopped moving altogether.

Kaito drank his second potion.

Fourteen thousand health remained on the creature. No charges. One sheath strike that might open armor if he found the seam. Two more potions. One blade he could not afford to draw.

The structure of the fight had collapsed. Togashi had been the mind. Kise had been the force. Kaito had been the edge. Now the mind was broken against a pipe. The force stood with empty hands. The edge had seven years left and understood exactly what three were worth.

Not this. Not a corridor beneath Kokubunji. Not for a man he did not owe.

Kaito shifted his grip on the sheath, thumb resting just beneath the guard.

Later.